[PSUBS-MAILIST] PSUBS light project status

Sat Jul 2 10:31:09 EDT 2016

Need to look at spec but this led driver might work.

Cliff

On Saturday, July 2, 2016, Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Thanks Alan! I like the idea of the glass lens over plastic because of the
> heat, and in my case because I'm air compensating the motors it would be
> quite simple to run extra air lines to the lights. But what I have no idea
> about is the driver. I followed and the link but the grammar is so bad it's
> on the verge of incomprehensible. However, but for five bucks I suppose I
> could burn up a few of these drivers in testing to find out how they work.
> Due to time constraints I'll probably strap a couple of dive flashlights on
> the sub for Seneca, and this will be my next little project afterwards.
>
> Best,
>
> Alec
>
> On Sat, Jul 2, 2016 at 12:39 AM, Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org
> <javascript:_e(%7B%7D,'cvml','personal_submersibles at psubs.org');>> wrote:
>
>> Alec,
>> I have been working on a light housing. Have attached a dwg but it is not
>> finalized.
>> I would have had it completed but have been waiting a Month on a
>> replacement motor
>> for my lathe :(
>> I am using a square 50W LED, but you can get 60 & 80W LEDs the same size.
>> I am NOT putting the driver in the light housing, it ends up sitting at
>> the back of the LED
>> where there is a massive amount of heat generated from these high power
>> LEDs.
>> Keeping the driver in the hull makes it easy to change out if it fails.
>> I am going with an acrylic lens & oil compensated. I would have liked a
>> borosilicate pressure
>> resistant lens but it was going to cost $100-+. Also if there is a leak
>> with a pressure resistant
>> housing, electrolysis can pressurize it with hydrogen gas.
>> I am not using a reflector as they don't seem to do anything with these
>> big LEDs. They are really
>> rows of little 1W LEDs,10X6 for a 60W. So you get light being emitted
>> from either side of the inch
>> wide emitter, that is hard to control, especially when you are wanting
>> an  80 degree wide angled
>> flood light.
>> My design also revolves around local stock aluminum tube sizes.
>> The LEDs are around 30 to 36V. I am using these as drivers. $4.64 US, not
>> bad.
>> Alan
>> Constant Voltage Constant Current DC-DC Power Module for Arduino
>> <http://www.dx.com/p/5a-constant-current-led-driver-module-battery-charger-red-433947#.V3dE1bh96Uk>
>>
>>
>> $ 4.64
>> Constant Voltage Constant Current DC-DC Power Module for Arduino
>> I like this from DX. Find the cool gadgets at a incredibly low price with
>> worldwide free shipping here.
>>
>> <http://www.dx.com/p/5a-constant-current-led-driver-module-battery-charger-red-433947#.V3dE1bh96Uk>
>>
>> ------------------------------
>> *From:* Alec Smyth via Personal_Submersibles <
>> personal_submersibles at psubs.org
>> <javascript:_e(%7B%7D,'cvml','personal_submersibles at psubs.org');>>
>> *To:* Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org
>> <javascript:_e(%7B%7D,'cvml','personal_submersibles at psubs.org');>>
>> *Sent:* Saturday, July 2, 2016 1:41 PM
>> *Subject:* [PSUBS-MAILIST] PSUBS light project status
>>
>> Hi gents,
>>
>> I have an almost-ready sub but no lights, so was wondering whether to
>> make them per the PSUBS-designed model in the community projects section of
>> the website. I'm in awe of those drawings! However, they show a printed
>> wiring board that is a placeholder for a part still to be designed. I was
>> wondering if that might have happened, or if there might be an ETA?
>>
>> Thanks,
>>
>> Alec
>>
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>>
>>
>>
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>>
>
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